Montgomery County, MD

522 public highway bridges

Montgomery County Bridge Snapshot

Montgomery County, Maryland contains 522 public highway bridges in the FHWA National Bridge Inventory. Roughly 33% are rated “Good,” 46.7% “Fair,” 4.6% “Poor,” and 4.6% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in MD are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

522

Total Bridges

33%

Good

4.6%

Poor

4.6%

Structurally Deficient

Condition Distribution

Good

33% (172)

Fair

46.7% (244)

Poor

4.6% (24)

SD

4.6% (24)

All Bridges (522)

Sort:

MUNCASTER ROAD

Over: ROCK CREEK

1 MILE NORTH OF MD 115, Montgomery, MD

Built 2006 Load: 68.0 t ADT: 7,803

MONTROSE ROAD

Over: RAMP TO I-270

0.1 MI W OF I-270, Montgomery, MD

Built 1990 Load: 68.5 t ADT: 22,375

SUNDOWN ROAD

Over: HAWLINGS RIVER

2.0 MILES EAST OF MD 108, Montgomery, MD

Built 1996 Load: 70.3 t ADT: 6,900

CLARKSBURG ROAD

Over: BENNETT CREEK TRIBUTARY

0.2 MI W BETHESDA CH RD, Montgomery, MD

Built 2003 Load: 71.2 t ADT: 4,123

OLDE MILL RUN ROAD

Over: MD200 (ICC)

0.7 mi E OF REDLAND RD, Montgomery, MD

Built 2010 Load: 72.1 t ADT: 1,073

ESWORTHY ROAD

Over: MUDDY BRANCH

AT QUERY MILL ROAD, Montgomery, MD

Built 1999 Load: 73.0 t ADT: 3,639

BEACH DRIVE

Over: SILVER CREEK

0.4 MILES EAST OF MD 185, Montgomery, MD

Built 2022 Load: 73.2 t ADT: 4,900

MD 355

Over: RELOCATED RANDOLPH ROAD

2.5 MI N. OF I-495, Montgomery, MD

Built 2009 Load: 74.5 t ADT: 60,000

MD 118

Over: CSX TRANSPORTATION

0.98 MILE N OF MD 117, Montgomery, MD

Built 1998 Load: 74.8 t ADT: 25,451

AVERY ROAD

Over: ROCK CREEK

0.75 MI N OF JCT SR 28, Montgomery, MD

Built 1994 Load: 74.8 t ADT: 3,894

NORBECK RD & NORWO

Over: NORTHWEST BRANCH

0.7 MILES EAST OF MD 182, Montgomery, MD

Built 2002 Load: 75.7 t ADT: 20,520

FATHER HURLEY BOUL

Over: CSXT RAILROAD

NORTH OF MD 118, Montgomery, MD

Built 2010 Load: 76.2 t ADT: 588

GOSHEN ROAD

Over: CABIN BRANCH

0.2 MI N OF CENTERWAY RD, Montgomery, MD

Built 2004 Load: 76.6 t ADT: 25,587

PYRITE LANE

Over: JAMES CREEK

1.4 MILES EAST OF MD-97, Montgomery, MD

Built 2005 Load: 79.4 t ADT: 518

DORSET AVENUE

Over: WILLETT BRANCH

1 MI N OF MD RTE 190, Montgomery, MD

Built 1999 Load: 80.7 t ADT: 1,744

MONTROSE ROAD

Over: OLD FARM CREEK

0.5 MI. W. OF JEFFERSON, Montgomery, MD

Built 2008 Load: 85.7 t ADT: 66,690

STONEYBROOK DRIVE

Over: CSXT RAILROAD

0.1 MILE WEST OF MD 192, Montgomery, MD

Built 2001 Load: 89.8 t ADT: 6,654

TIVOLI LAKE BOULEV

Over: BEL PRE CREEK

1.7 MILE EAST OF MD 97, Montgomery, MD

Built 2017 Load: 96.9 t ADT: 310

CENTURY BOULEVARD

Over: TRIB TO LITTLE SENECA CR

0.3 MILES WEST OF I-270, Montgomery, MD

Built 2014 Load: 96.9 t ADT: 3,720

MD 28

Over: MUDDY BRANCH

0.03 MILE EAST OF MD 899A, Montgomery, MD

Built 2004 Load: 99.9 t ADT: 24,594

MD 108

Over: TRIB TO JAMES CREEK

1.24 MILES EAST OF MD 97, Montgomery, MD

Built 1994 Load: 99.9 t ADT: 22,100

MD 124

Over: WHETSTONE RUN

1.23 MILE NORTH OF MD 355, Montgomery, MD

Built 1990 Load: 99.9 t ADT: 23,940

IS 270 RAMP L(1)

Over: GUNNERS BRANCH

IS 270/MIDDLEBROOK INTER, Montgomery, MD

Built 1991 Load: 99.9 t ADT: 6,945

CO 141 (MIDDLEBROO

Over: GUNNERS BRANCH

0.1 MILE WEST OF IS 270, Montgomery, MD

Built 1959 Load: 99.9 t ADT: 16,296

LONGDRAFT ROAD

Over: LONG DRAUGHT BRANCH

0.4 MI N OF GREAT SENECA, Montgomery, MD

Built 1977 Load: 99.9 t ADT: 3,200

REDLAND ROAD

Over: CRABBS CREEK

0.7 MILES EAST OF MD 355, Montgomery, MD

Built 1981 Load: 99.9 t ADT: 25,649

MONTGOMERY VILLAGE

Over: NORTH CREEK

2.8 MI NORTH OF MD 355, Montgomery, MD

Built 1972 Load: 99.9 t ADT: 31,432

SAM EIG HIGHWAY

Over: TRIBUTARY TO MUDDY BRANC

1 MI E OF MUDDY BRANCH RD, Montgomery, MD

Built 1991 Load: 99.9 t ADT: 34,100

RANWORTH DRIVE

Over: TRIBUTARY TO LITTLE SENE

0.5 MI N OF MD RTE 117, Montgomery, MD

Built 1994 Load: 99.9 t ADT: 150

WICKHAM ROAD

Over: ROCK CRK NORTH BRANCH TR

N OF BOWIE MILL ROAD, Montgomery, MD

Built 2002 Load: 99.9 t ADT: 684

WICKHAM ROAD

Over: TRIB. TO ROCK CREEK N. B

N OF BOWIE MILL ROAD, Montgomery, MD

Built 2002 Load: 99.9 t ADT: 376

OLD BALTIMORE ROAD

Over: JAMES CREEK

1.2 MI. N. OF MD 108, Montgomery, MD

Built 1998 Load: 99.9 t ADT: 3,623

FDA BOULEVARD

Over: TRIBUTARY TO PAINT BRANC

.4 MI W OF CHERRY HILL RD, Montgomery, MD

Built 2010 Load: 99.9 t ADT: 2,710

WISCONSIN AVENUE

Over: BETHESDA METRO PED. TUNN

70 FT SOUTH OF MD 410, Montgomery, MD

Built 1984 Load: 99.9 t ADT: 40,769

EDISON PARK DRIVE

Over: TRUCK LOADING DOCKS

0.4 MI NORTH OF MD 28, Montgomery, MD

Built 1968 Load: 99.9 t ADT: 130

SNOWDEN FARM PARKW

Over: LITTLE SENECA CREEK

N. OF FREDERICK ROAD, Montgomery, MD

Built 2011 Load: 99.9 t ADT: 6,303

SNOWDEN FARM PARKW

Over: TRIB TO LITTLE SENECA CR

N. OF FREDERICK ROAD, Montgomery, MD

Built 2011 Load: 99.9 t ADT: 5,795

FOREMAN BOULEVARD

Over: TRIB TO LITTLE SENECA CR

E. OF FREDERICK ROAD, Montgomery, MD

Built 2011 Load: 99.9 t ADT: 3,500

WEST OLD BALTIMORE

Over: CABIN BRANCH

0.5 MI EAST OF MD 121, Montgomery, MD

Built 2016 Load: 99.9 t ADT: 2,221

SERPENTINE WAY

Over: TRIB TO PAINT BRANCH

0.7 MILES WEST OF US-29, Montgomery, MD

Built 1975 Load: 99.9 t ADT: 3,476

CENTURION WAY

Over: SANDY BRANCH

3.3 MILES NORTH MD-190, Montgomery, MD

Built 2000 Load: 99.9 t ADT: 6,433

OBSERVATION DRIVE

Over: TRIB TO LITTLE SENECA CR

0.3 MI. EAST OF I-270, Montgomery, MD

Built 1994 Load: 99.9 t ADT: 11,584

HOMECREST ROAD

Over: NORTHWEST BRANCH TRIB

0.9 MI. E. OF MD 97, Montgomery, MD

Built 1972 Load: 99.9 t ADT: 105

UPSHIRE CIRCLE

Over: SHADY BRANCH

.7 MI W OF MUDDY BR ROAD, Montgomery, MD

Built 1990 Load: 99.9 t ADT: 265

VICTORY FARM DRIVE

Over: TRIBUTARY TO WHETSTONE R

0.3 MI N OF GIRARD ST, Montgomery, MD

Built 1981 Load: 99.9 t ADT: 3,667

CARNATION DRIVE

Over: WATTS BRANCH TRIBUTARY

1.25 MI N OF MD 28, Montgomery, MD

Built 1969 Load: 99.9 t ADT: 480

MD 200

Over: Mill Creek

4.98 mi west of MD 97, Montgomery, MD

Built 2008 Load: 99.9 t ADT: 42,498

MD 200

Over: Mill Creek Tributary

4.56 mi west of MD 97, Montgomery, MD

Built 2008 Load: 99.9 t ADT: 42,498

ZION ROAD

Over: HAWLINGS RIVER

2.8 MILES NORTH OF MD 108, Montgomery, MD

Built 1930 Load: 4.5 t ADT: 2,440

MOUTH OF MONOCACY

Over: LITTLE MONOCACY RIVER

0.5 MI E OF MT EPHRAM RD, Montgomery, MD

Built 1971 Load: 18.1 t ADT: 79

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026